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The installation files are distributed in several packages in order to facilitate the transfers and the choice of the components of your interest.

Prerequisite : Windows 95/98/NT/2000/XP
Please consult the installation procedure before downloading files!

For those who do not want to download the installation files, the SAP sell  AstroCD N°3. Among many other astronomy resources this CD-ROM includes the program version 2.42, the TYCHO catalogue (1' 058' 332 stars to magnitude 11.5), the TYCHO INPUT (3' 154' 204 stars to magnitude 12.1) and all the index to search in GC, HD, SAO, BD, CD, CPD catalogues.  Please use the contact from the link above for order or other information.

The "Complete package" and the Virtual Moon Atlas is also available on the Deepsky 2003 CDrom.

For the details of each catalogue and how to obtain additional information please consult the catalogues descriptions.
For some file you have the choice to use HTTP or FTP, select your preferred option. Many thanks to Funet and CuraNet to provide a mirror for the most demanded files.

Don't use your web browser to download large file. As a download software, I recommand to you Star Downloader or LeechFTP . They offers greater security for big files downloading and can come back to interrupted sessions, this let you to split a download if you want. More, they're free ! Star Downloader integrate with your browser. To use LeechFtp you must just start the program and choose the "Tools-URL Snatcher". And now, all the copied URL copied in the clipboard will be downloaded (use mouse right button on the below links)

Last software version and basic options :

Basic package 2.75

CuraNet mirror

3.9 Mb 
Sep 27 2002

Complete program version 2.75, Bright Stars Cat (9096 stars to magnitude 6.5), 10'000 nebulae from SAC 7.2, elements of planets, comets and asteroids. (Note : this elements are distributed with permission from CBAT. Please refresh regularly updated version using the "Online Resources" program menu.)


Translation in all other language. English and French are include with the basic software.

Additional textures   Additional star or planetary texture.

Planetary Satellites

CuraNet mirror

0.5 Mb
Nov 14 1999
Positions of the satellites of Mars,Jupiter,Saturn and Uranus between 1997 and 2020. 
Precision : 0.5 arcsec.
Planetary Satellites,
High Precision
1.3 Mb
Sep 3 2000
High precision positions of the satellites of Mars,Jupiter,Saturn and Uranus between 1995 and 2020.
Planets high precision 0.3 Mb
Nov 26 2001
High precision position of the planets for the period 1800 - 2100 using the methode Series96.

Realsky® support files

0.4 Mb
May 8 2002
DLL and header files required to use RealSky or DSS CD-rom

Milky Way

Nov 26 2001

Plot the Milky Way to the chart.


1.8 Mb
Nov 26 2001

Eclipses parameters for the period -2000 ŕ +3000 to be used with the calendar function.

Meade Plugin v1.3


0.3 Mb
Apr 13 2002
Plugin for Meade telescopes. Can be used with LX200, Autostar, Magellan I/II and other systems using the LX200 protocol.
Include a correction for the Autostar.

Encoder Plugin

0.4 Mb
Apr 13 2002

Plugin for Tangent type encoders. Can be used with encoder interface box using the Tangent protocol like the Ouranos, AAM or NGC-MAX box.
ASCOM Plugin v1.2 0.3 Mb
Apr 13 2002
Plugin for all telescope supported by the ASCOM platform.
You also need to install the latest version available from

Complete package 2.75

15 Mb
Sep 27 2002
Group the following install files :
All the above package and the nebulae and Sky2000 V3 catalog, and the utility programs.

Updates : 
If you use a language other than English or French please look if an updated translation is available.

Version 2.61 to 2.75 update 3.1 Mb
Sep 27 2002
Use this file to upgrade to the latest version only if you already install the version 2.61.
User of earlier version must reinstall the basic package. 
Version 2.7 to 2.75 update 2 Mb
Sep 27 2002
Use this file to upgrade to the latest version only if you already install the version 2.7, 2.71, 2.72, 2.73 or 2.74.
Additional catalogues:


4.7 Mb 
12 dec 2002
Hipparcos catalog : 118'000 stars to magnitude 8.5. 

Sky2000 v3

CuraNet mirror

6.1 Mb
Oct 24 2000
Master Stars Catalog version 3 : 300' 000 stars to magnitude 9. 

Tycho-2 Part 1

14 Mb
Apr 4 2000
900'000 stars from Tycho-2 catalog to magnitude 11.0
Require Cartes du Ciel version 2.5
Use this catalog in preference to Tycho-1 or Tycho Input for its better precision.

Tycho-2 Part 2


26 Mb
Apr 4 2000
1'600'000 stars from Tycho-2 catalog between magnitude 11 and 12.
Require Tycho-2 Part1 be installed first.


CuraNet mirror

1.9 Mb
Nov 26 2001
68'179 variable stars from  GCVS, NSV and EVS

Multiples stars

CuraNet mirror

2.8 Mb 
Sep 27 2002
83'211 multiple stars from WDS 2001, new version including a corrected search index.


CuraNet mirror

1 Mb
Apr 15 2000
40'000 nebulae from 6 catalogs (NGC+IC,LBN,RC3,OCL,GCM,GPN).
Equivalent to the catalog include to the base version up to version 2.44


5.2 Mb
Apr 1 2000
193'898 galaxies from PGC1999 catalog.
See also the ASG page below for 1 million galaxies catalog.
Additional catalogues Mar 21 2001 Additional external catalogues ready to import.
ASG Catalog page  

This page contain new or updated catalog for use with Cartes du Ciel.
Among many interesting pieces you will find the PGC2002 with 1.1 million galaxies! and an updated WDS catalog.
Many thank's to Jeff Burton for is excellent work.

Search Index
SAO 1.7 Mb
Sep 22 1999
Index to search by Smithsosian Astrophysical Observatory SAO number
BD 3.2 Mb
Sep 22 1999
Index to search by Bonner Durchmusterung and Southern Durchmusterung BD number 
CD 4 Mb
Sep 22 1999
Index to search by Cordoba Durchmusterung CD number
CPD 3 Mb
Sep 22 1999
Index to search by Cape Photographic Durchmusterung CPD number
HD 2.8 Mb
Sep 22 1999
Index to search by Henry Draper catalog number including extentions.
GC 0.4 Mb
Sep 22 1999
Index to search by Boss General Catalog GC number



Nov 11 2002

Install this file to use the calendar feature as an independent program.
CatGen 1.3 610Kb
Sep 27 2002
Generate new catalog by yourself with this tool. Can be used with almost any catalog text file available from the CDS or ADC. Now include the help file!
Constellation figure modification program 338 Kb
June 24 2001
Program to modify the constellation figure lines.
TLE download 485 Kb
June 15 2002
A program by Christopher Welfare to simpify the update of artificial satellites TLE files. This program is run from the "TLE download" button in the calendar.
If you don't already install the Visual Basic 6.0 runtime you also need this file: VBRun60sp5.exe (1Mb). In the case you receive an error message about msinet.ocx you can get it here.
Old catalogs now obsolete
Obsolete   Tycho and Tycho Input catalog
Original catalogues conversion utilities :
You may use this programs to convert original catalogue files for use with "Sky Charts"
Please read the following note containing more information on how to install this catalogs.
This programs are intended only if you already own the original catalog to avoid you have to download another version. If this is not the case I suggest you download the smallest binary version for Tycho-2, Tycho, Tycho Input from this page or GSC Compact.

ftp (funet)

250 Kb
Sep 22 1999
1' 058' 332 stars to magnitude 11.5
Catalogue I/239  (103 Mb gziped)
Required file : tyc_main.dat in Unix format (without CR)


Funet mirror

171 Kb
Apr 1 2000
Tycho-2 catalog 2'557'501 stars to magnitude 12
CDrom Tycho-2 or download : Tycho-2 ou CDS
Required files  : catalog.dat, suppl_1.dat, index.dat in DOS format.
Require Cartes du Ciel version 2.5 
Tycho Input

ftp (funet)

250 Kb
Sep 22 1999
3' 154' 204 stars to magnitude 12.1
Catalogue I/197A (51 Mb compressed)
Required files : tic1 , tic2 , tic3 , tic4  in Unix format (without CR)

HST Guide Star

Funet mirror

299 Kb
Apr 24 2001

19'000'000 stars to magnitude 15 
Required files : 9537 files nnnn.gsc on two CD
New version : allow to filter multiple entries and non stellar objects.
note: The original FITS file may also be use directely. This program don't work with the GSC compact version

Windows 95 bug :
If you run Windows 95 or Windows 98 and you receive a message about a missing export OLEAUT32.DLL:VarNot, please install the dcom update from Microsoft:
for Windows 98:
for Windows 95:
If you have an old copy of the COMCTL32.DLL in \windows\system (file older than 08/24/96) you must upgrade it to the newest version from Microsoft.
msvcrt.dll   The file MSVCRT.DLL may be missing from older Windows 95 installation. You can install it using this file.
riched20.dll 280 Kb This file is requiered to fix the RichEdit line insertion error.
Download this one if you don't have this file in your Windows System directory.
(the file is normally shipped with MS Office 97, MS Internet Explorer 4.0, MS Windows NT 4.0).
Please do not replace an existing file.
If your computer froze when using "Cartes du Ciel" this is most likely due to your graphic card driver. Try to use a standard VGA mode, reduce graphic acceleration or install a new driver version. There is to much different material and I cannot maintain a list of problem specific to each one.

Since 1999-09-22